Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
29 Cards in this Set
- Front
- Back
|
What is the rule for sine? |
a/sinA = b/sinB = c/sinC |
|
|
What is the rule for cosine? |
a^2=b^2 + c^2 - 2bc cosA |
|
|
What is the formula for the area of a triangle? |
1/2absinC |
|
|
What is the formula for writing an expression as a log? |
Loga n= x means that a^x=n |
|
|
What are the log rules? |
Loga xy=logax+logay Loga(x/y)= logax-logay Loga(x)^k= klogax |
|
|
What is the equation for changing the base in logs? |
Logax=logbx/logba
Or the special case... Logab=1/logba |
|
|
What does the ! mean? |
Factorial |
|
|
What is the equation for working out the binomial expansion? |
nC0a^n+nC1a^n-1b+nC2a^n-2b^2 etc. |
|
|
How do you convert degrees to radians? |
1radian= 180degrees/pi |
|
|
How do you convert degrees into radians? |
1degree=pi/180 |
|
|
What is the equation for arc length? |
l=r x feta |
|
|
What is the equation to working out the area of a sector? |
A=1/2r^2 x feta |
|
|
What is the equation for changing the base in logs? |
Logax=logbx/logba
Or the special case... Logab=1/logba |
|
|
What does the ! mean? |
Factorial |
|
|
What is the equation for working out the binomial expansion? |
nC0a^n+nC1a^n-1b+nC2a^n-2b^2 etc. |
|
|
How do you convert degrees to radians? |
1radian= 180degrees/pi |
|
|
How do you convert degrees into radians? |
1degree=pi/180 |
|
|
What is the equation for arc length? |
l=r x feta |
|
|
What is the equation to working out the area of a sector? |
A=1/2r^2 x feta |
|
|
What is the equation for a circle with centre (0,0)?
|
x^2 + y^2 = r^2
|
|
|
What is the equation for a circle with centre (a,b)?
|
(x-a)^2 + (y-b)^2 = r^2
|
|
|
What is the equation for finding the common ratio?
|
Un/Un-1
|
|
|
What is the formula for finding the sum of a geometric sequence?
|
Sn= a(1-r^n)/1-r |
|
|
What is the equation for finding a term in a geometric sequence? |
Tn= ar^n-1
|
|
|
What is the equation for finding the sum to infinity in a geometric sequence?
|
Sn= a/1-r
|
|
|
What is a CAST diagram?
|
Anticlockwise graph A= everything is positive S= Sine positive and the rest are negative T= Tan is positive and the rest are negative C- Cosine is positive and the rest are negative |
|
|
On a sine curve, where does y=0?
|
At y=0 x= 180 and x=360 (etc) |
|
|
On a cosine curve, where does y=0?
|
At y=0 x=90 and x=270 (etc) |
|
|
What is a period for sine cosine and tangent?
|
Sine= 360 degrees Cosine= 360 degrees Tangent= 180 degrees |
